Hi, can someone helped me to deduce the right math strategy here because I wasn’t sure of the word axiomatic when I was attempting the question?

My math strategy for the second blank

since = positive

Speculations = negative

certain = positive

Therefore, I narrowed down the answers to (D) and (E) and eventually settled on dependence as differences from does not seem making sense in the context of the question.

Also, sidetracking the topic, I have been able to get about 10/14 in most 2 Big Book’s TC but somehow couldn’t move it higher. How would you do differently to get it higher? Any advice will be much appreciated